Species: Physcia tribacia

Thallus small to middle-sized, loosely adnate, greenish gray to ashy, sometimes forming a crust toward the center, the flat lobes short, or becoming long and more branched, the branches sometimes imbricated, with usually strongly ascending, granulose, rarely crenate margins; whitish below, with rhizoids of the same color; apothecia small, sessile to subsessile, the disk slightly concave to flat, blackish brown to black, or obscurely whitish pruinose, the exciple entire to crenulate; spores oblong-ellipsoid (Fink 1935).